Add the wallet GUI

.gitignore

@@ -13,3 +13,14 @@
 
 # Dependency directories (remove the comment below to include it)
 # vendor/
+
+# Electron.
+electron/release
+electron/.cache
+electron/.electron_cache
+electron/node_modules
+electron/.gox_output
+electron/server
+
+# dependencies
+**/node_modules

.travis.yml

@@ -13,9 +13,14 @@ matrix:
       if: type != pull_request
       osx_image: xcode8
 
+before_install:
+  - nvm install 10.16
+
 install:
   - go get -u github.com/FiloSottile/vendorcheck
   - make install-linters
+  - make install-deps-ui
 
 script:
-  - make check
+  - make lint-ui
+  - make build-ui

Makefile

@@ -3,6 +3,9 @@ DEFAULT_GOAL := help
 OPTS?=GO111MODULE=on
 TEST_OPTS?=-race -tags no_ci -cover -timeout=10m
 
+# Static files directory
+GUI_STATIC_DIR = src/gui/static
+
 check: lint test ## Run linters and tests
 
 lint: ## Run linters. Use make install-linters first
@@ -32,5 +35,14 @@ dep: ## Sorts dependencies
 	${OPTS} go mod download
 	${OPTS} go mod tidy -v
 
+install-deps-ui:  ## Install the UI dependencies
+	cd $(GUI_STATIC_DIR) && npm ci
+
+lint-ui:  ## Lint the UI code
+	cd $(GUI_STATIC_DIR) && npm run lint
+
+build-ui:  ## Builds the UI
+	cd $(GUI_STATIC_DIR) && npm run build
+
 help:
 	@grep -E '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-30s\033[0m %s\n", $$1, $$2}'

electron/README.md

@@ -0,0 +1,48 @@
+# Build system
+
+The GUI client is an Electron (http://electron.atom.io/) app.
+
+It cross compiles for osx, linux and windows 64 bit systems.
+
+## Requirements
+
+The Skycoin repository must be cloned in the parent directory.
+
+gox (go cross compiler), node and npm.
+
+### gox
+
+To install gox:
+
+```sh
+go get github.com/gz-c/gox
+```
+
+### NPM
+
+Node and npm installation is system dependent.
+
+## Make sure that the wallet dist is up to date
+
+Recompile the wallet frontend. See [Wallet GUI Development README](../src/gui/static/README.md) for instructions.
+
+## Use electron-builder to pack and create app installer
+
+Use this command for preparing the build process.
+
+```sh
+./perpare-build.sh
+```
+
+Then you can compile the version for the OS you need with any of these commands:
+
+```sh
+npm run dist-win32
+npm run dist-win64
+npm run dist-win
+npm run dist-linux
+npm run dist-mac
+npm run dist-mac
+```
+
+Final results are placed in the `release` folder.

electron/app/.snyk

@@ -0,0 +1,9 @@
+# Snyk (https://snyk.io) policy file, patches or ignores known vulnerabilities.
+version: v1.13.1
+# ignores vulnerabilities until expiry date; change duration by modifying expiry date
+ignore:
+  'npm:chownr:20180731':
+    - '*':
+        reason: No fix available
+        expires: '2019-06-25T15:35:33.473Z'
+patch: {}

electron/app/electron-api.js

@@ -0,0 +1,10 @@
+const { contextBridge, ipcRenderer } = require('electron')
+
+// Allows to check the URL of the local node while using Electron, as the port number
+// is selected randomly.
+
+contextBridge.exposeInMainWorld('electron', {
+    getLocalServerUrl: () => {
+        return ipcRenderer.sendSync('localNodeUrl');
+    }
+});